- 03 Dec, 2009 40 commits
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Eric W. Biederman authored
This allows namespace exit methods to batch work that comes requires an rcu barrier using call_rcu without having to treat the unregister_pernet_operations cases specially. Signed-off-by:
Eric W. Biederman <ebiederm@xmission.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Eric W. Biederman authored
xfrm.nlsk is provided by the xfrm_user module and is access via rcu from other parts of the xfrm code. Add xfrm.nlsk_stash a copy of xfrm.nlsk that will never be set to NULL. This allows the synchronize_net and netlink_kernel_release to be deferred until a whole batch of xfrm.nlsk sockets have been set to NULL. Signed-off-by:
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Eric W. Biederman authored
Move network device exit batching from a special case in net_namespace.c to using common mechanisms in dev.c Signed-off-by:
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Eric W. Biederman authored
- Add exit_list to struct net to support building lists of network namespaces to cleanup. - Add exit_batch to pernet_operations to allow running operations only once during a network namespace exit. Instead of once per network namespace. - Factor opt ops_exit_list and ops_exit_free so the logic with cleanup up a network namespace does not need to be duplicated. Signed-off-by:
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Patrick McHardy authored
commit 8ec1e0ebe26087bfc5c0394ada5feb5758014fc8 Author: Patrick McHardy <kaber@trash.net> Date: Thu Dec 3 12:16:35 2009 +0100 ipv4: add sysctl to accept packets with local source addresses Change fib_validate_source() to accept packets with a local source address when the "accept_local" sysctl is set for the incoming inet device. Combined with the previous patches, this allows to communicate between multiple local interfaces over the wire. Signed-off-by:Patrick McHardy <kaber@trash.net> Signed-off-by:
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Patrick McHardy authored
commit d124356ce314fff22a047ea334379d5105b2d834 Author: Patrick McHardy <kaber@trash.net> Date: Thu Dec 3 12:16:35 2009 +0100 net: fib_rules: allow to delete local rule Allow to delete the local rule and recreate it with a higher priority. This can be used to force packets with a local destination out on the wire instead of routing them to loopback. Additionally this patch allows to recreate rules with a priority of 0. Combined with the previous patch to allow oif classification, a socket can be bound to the desired interface and packets routed to the wire like this: # move local rule to lower priority ip rule add pref 1000 lookup local ip rule del pref 0 # route packets of sockets bound to eth0 to the wire independant # of the destination address ip rule add pref 100 oif eth0 lookup 100 ip route add default dev eth0 table 100 Signed-off-by: -
Patrick McHardy authored
commit 68144d350f4f6c348659c825cde6a82b34c27a91 Author: Patrick McHardy <kaber@trash.net> Date: Thu Dec 3 12:05:25 2009 +0100 net: fib_rules: add oif classification Support routing table lookup based on the flow's oif. This is useful to classify packets originating from sockets bound to interfaces differently. The route cache already includes the oif and needs no changes. Signed-off-by: -
Patrick McHardy authored
commit 229e77eec406ad68662f18e49fda8b5d366768c5 Author: Patrick McHardy <kaber@trash.net> Date: Thu Dec 3 12:05:23 2009 +0100 net: fib_rules: rename ifindex/ifname/FRA_IFNAME to iifindex/iifname/FRA_IIFNAME The next patch will add oif classification, rename interface related members and attributes to reflect that they're used for iif classification. Signed-off-by: -
Patrick McHardy authored
commit b8952893d5d86f69c4e499d191b98c6658f64b0f Author: Patrick McHardy <kaber@trash.net> Date: Thu Dec 3 12:05:22 2009 +0100 net: fib_rules: rearrange struct fib_rule The ifname member is only used to resolve interface names and is not needed during rule lookups. The target and ctarget members however are used during rule lookups and are currently located in a second cacheline. Move ifname further to the end to make sure both target and ctarget are located in the same cacheline as other members used during rule lookups. The layout on 64 bit changes from: struct fib_rule { ... u32 table; /* 56 4 */ u8 action; /* 60 1 */ /* XXX 3 bytes hole, try to pack */ /* --- cacheline 1 boundary (64 bytes) --- */ u32 target; /* 64 4 */ /* XXX 4 bytes hole, try to pack */ struct fib_rule * ctarget; /* 72 8 */ struct rcu_head rcu; /* 80 16 */ struct net * fr_net; /* 96 8 */ }; to: struct fib_rule { ... u32 table; /* 40 4 */ u8 action; /* 44 1 */ /* XXX 3 bytes hole, try to pack */ u32 target; /* 48 4 */ /* XXX 4 bytes hole, try to pack */ struct fib_rule * ctarget; /* 56 8 */ /* --- cacheline 1 boundary (64 bytes) --- */ char ifname[16]; /* 64 16 */ struct rcu_head rcu; /* 80 16 */ struct net * fr_net; /* 96 8 */ }; Signed-off-by: -
Mikulas Patocka authored
Fix dma-api-checking warnings in Sun HME Sun HME driver is mapping the first fragment with dma_map_single and subsequent fragments with dma_map_page. It is unmapping all fragments with dma_unmap_single and that produces the warning. This patch changes it so that it unmaps only the first fragment with dma_unmap_single and subsequent fragments are unmapped with dma_unmap_page. WARNING: at lib/dma-debug.c:816 check_unmap+0x3ac/0x780() hme 0000:01:01.1: DMA-API: device driver frees DMA memory with wrong function [device address=0x00000000c1082000] [size=32 bytes] [mapped as page] [unmapped as single] Modules linked in: nbd sunhme openpromfs sermouse unix Call Trace: [0000000000456910] warn_slowpath_common+0x50/0xa0 [0000000000571f4c] check_unmap+0x3ac/0x780 [0000000000572570] debug_dma_unmap_page+0x50/0x60 [000000001002f5fc] happy_meal_tx+0x11c/0x260 [sunhme] [000000001002fc4c] happy_meal_interrupt+0xcc/0xe0 [sunhme] [0000000000492d94] handle_fasteoi_irq+0x74/0x100 [000000000042ac0c] handler_irq+0xcc/0x100 [0000000000426a54] valid_addr_bitmap_patch+0x14/0x1c0 [0000000000665de0] _spin_unlock_irqrestore+0x40/0x60 [0000000000462bb8] mod_timer+0x118/0x1a0 [00000000005ec254] sk_reset_timer+0x14/0x40 [0000000000635e4c] tcp_event_new_data_sent+0x8c/0xc0 [0000000000639374] __tcp_push_pending_frames+0x34/0xc0 ---[ end trace 73d5c42c1e9f11c4 ]--- Mapped at: [<000000001002f148>] happy_meal_start_xmit+0x308/0x480 [sunhme] [<00000000005fc858>] dev_hard_start_xmit+0x318/0x3c0 [<000000000060fec4>] sch_direct_xmit+0x1a4/0x200 [<00000000005fced0>] dev_queue_xmit+0x410/0x560 [<0000000000604a1c>] neigh_resolve_output+0xfc/0x300 Signed-off-by:
Mikulas Patocka <mpatocka@redhat.com> Signed-off-by:
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Ilpo Järvinen authored
Eric Dumazet mentioned in a context of another problem: "Well, it seems NFS reuses its socket, so maybe we miss some cleaning as spotted in this old patch" I've not check under which conditions that actually happens but if true, we need to make sure we don't accidently leave stale hints behind when the write queue had to be purged (whether reusing with NFS can actually happen if purging took place is something I'm not sure of). ...At least it compiles. Signed-off-by:
Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by:
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David S. Miller authored
Otherwise: ERROR: "sysctl_tcp_cookie_size" [net/ipv6/ipv6.ko] undefined! make[1]: *** [__modpost] Error 1 Signed-off-by: -
David S. Miller authored
net/ipv4/tcp_output.c: In function ‘tcp_make_synack’: net/ipv4/tcp_output.c:2488: warning: cast from pointer to integer of different size Signed-off-by: -
Eric W. Biederman authored
Take advantage of the fact that an explicit rtnl_kill_links is unnecessary (and skipping it improves batching), as network namespace exit calls dellink on all remaining virtual devices, and rtnl_link_unregister calls dellink on all outstanding devices in that network namespace. To do this we need to leave the vlan proc directories in place until after network device exit time, which is done by using register_pernet_subsys instead of register_pernet_device. Signed-off-by:
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Ben Hutchings authored
Unimplemented operations should not silently fail. Signed-off-by:
Ben Hutchings <ben@decadent.org.uk> Signed-off-by:
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Ben Hutchings authored
These functions provide the default behaviour and do not need to be set in struct ethtool_ops. Signed-off-by:
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Ben Hutchings authored
Signed-off-by:
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William Allen Simpson authored
Parse incoming TCP_COOKIE option(s). Calculate <SYN,ACK> TCP_COOKIE option. Send optional <SYN,ACK> data. This is a significantly revised implementation of an earlier (year-old) patch that no longer applies cleanly, with permission of the original author (Adam Langley): http://thread.gmane.org/gmane.linux.network/102586 Requires: TCPCT part 1a: add request_values parameter for sending SYNACK TCPCT part 1b: generate Responder Cookie secret TCPCT part 1c: sysctl_tcp_cookie_size, socket option TCP_COOKIE_TRANSACTIONS TCPCT part 1d: define TCP cookie option, extend existing struct's TCPCT part 1e: implement socket option TCP_COOKIE_TRANSACTIONS TCPCT part 1f: Initiator Cookie => Responder Signed-off-by: William.Allen.Simpson@gmail.com Signed-off-by: -
William Allen Simpson authored
Calculate and format <SYN> TCP_COOKIE option. This is a significantly revised implementation of an earlier (year-old) patch that no longer applies cleanly, with permission of the original author (Adam Langley): http://thread.gmane.org/gmane.linux.network/102586 Requires: TCPCT part 1c: sysctl_tcp_cookie_size, socket option TCP_COOKIE_TRANSACTIONS TCPCT part 1d: define TCP cookie option, extend existing struct's Signed-off-by: William.Allen.Simpson@gmail.com Signed-off-by: -
William Allen Simpson authored
Provide per socket control of the TCP cookie option and SYN/SYNACK data. This is a straightforward re-implementation of an earlier (year-old) patch that no longer applies cleanly, with permission of the original author (Adam Langley): http://thread.gmane.org/gmane.linux.network/102586 The principle difference is using a TCP option to carry the cookie nonce, instead of a user configured offset in the data. Allocations have been rearranged to avoid requiring GFP_ATOMIC. Requires: net: TCP_MSS_DEFAULT, TCP_MSS_DESIRED TCPCT part 1c: sysctl_tcp_cookie_size, socket option TCP_COOKIE_TRANSACTIONS TCPCT part 1d: define TCP cookie option, extend existing struct's Signed-off-by: William.Allen.Simpson@gmail.com Signed-off-by: -
William Allen Simpson authored
Data structures are carefully composed to require minimal additions. For example, the struct tcp_options_received cookie_plus variable fits between existing 16-bit and 8-bit variables, requiring no additional space (taking alignment into consideration). There are no additions to tcp_request_sock, and only 1 pointer in tcp_sock. This is a significantly revised implementation of an earlier (year-old) patch that no longer applies cleanly, with permission of the original author (Adam Langley): http://thread.gmane.org/gmane.linux.network/102586 The principle difference is using a TCP option to carry the cookie nonce, instead of a user configured offset in the data. This is more flexible and less subject to user configuration error. Such a cookie option has been suggested for many years, and is also useful without SYN data, allowing several related concepts to use the same extension option. "Re: SYN floods (was: does history repeat itself?)", September 9, 1996. http://www.merit.net/mail.archives/nanog/1996-09/msg00235.html "Re: what a new TCP header might look like", May 12, 1998. ftp://ftp.isi.edu/end2end/end2end-interest-1998.mail These functions will also be used in subsequent patches that implement additional features. Requires: TCPCT part 1a: add request_values parameter for sending SYNACK TCPCT part 1b: generate Responder Cookie secret TCPCT part 1c: sysctl_tcp_cookie_size, socket option TCP_COOKIE_TRANSACTIONS Signed-off-by: William.Allen.Simpson@gmail.com Signed-off-by: -
William Allen Simpson authored
Define sysctl (tcp_cookie_size) to turn on and off the cookie option default globally, instead of a compiled configuration option. Define per socket option (TCP_COOKIE_TRANSACTIONS) for setting constant data values, retrieving variable cookie values, and other facilities. Move inline tcp_clear_options() unchanged from net/tcp.h to linux/tcp.h, near its corresponding struct tcp_options_received (prior to changes). This is a straightforward re-implementation of an earlier (year-old) patch that no longer applies cleanly, with permission of the original author (Adam Langley): http://thread.gmane.org/gmane.linux.network/102586 These functions will also be used in subsequent patches that implement additional features. Requires: net: TCP_MSS_DEFAULT, TCP_MSS_DESIRED Signed-off-by: William.Allen.Simpson@gmail.com Signed-off-by: -
William Allen Simpson authored
Define (missing) hash message size for SHA1. Define hashing size constants specific to TCP cookies. Add new function: tcp_cookie_generator(). Maintain global secret values for tcp_cookie_generator(). This is a significantly revised implementation of earlier (15-year-old) Photuris [RFC-2522] code for the KA9Q cooperative multitasking platform. Linux RCU technique appears to be well-suited to this application, though neither of the circular queue items are freed. These functions will also be used in subsequent patches that implement additional features. Signed-off-by: William.Allen.Simpson@gmail.com Acked-by:
Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by:
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William Allen Simpson authored
Add optional function parameters associated with sending SYNACK. These parameters are not needed after sending SYNACK, and are not used for retransmission. Avoids extending struct tcp_request_sock, and avoids allocating kernel memory. Also affects DCCP as it uses common struct request_sock_ops, but this parameter is currently reserved for future use. Signed-off-by: William.Allen.Simpson@gmail.com Acked-by:
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David S. Miller authored
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Michael Chan authored
Replace pci_alloc_consistent() with dma_alloc_coherent() so that appropriate GFP flags can be used. Signed-off-by:
Michael Chan <mchan@broadcom.com> Signed-off-by:
Benjamin Li <benli@broadcom.com> Signed-off-by:
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Michael Chan authored
The old code mistakenly zeroed out the upper 32-bit of the DMA address. Signed-off-by:
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Michael Chan authored
Fix code to read the proper iSCSI MAC address for bnx2x devices. Signed-off-by:
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Michael Chan authored
Need to send a HALT command to the firmware to fully shutdown the bnx2x rings. Signed-off-by:
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Michael Chan authored
Old code was initializing the ring producers using an incorrect I/O address. Signed-off-by:
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Amit Kumar Salecha authored
Handle few corner cases in firmware hang detection and recovery: o Don't mark device state as READY, till handshake with firmware is done. o During probe, if start_firmware fails, restore reference count. o Don't increment refernce count, if start_firmware fails during firmware reset. o Clear __NX_RESETTING bit, incase of fatal error or tempeature reaches critical limit so that pci remove() doesn't poll on this bit. Signed-off-by:
Amit Kumar Salecha <amit.salecha@qlogic.com> Signed-off-by:
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Narender Kumar authored
Driver maps only some part of the MMIO bar 0 in case of NX2031. This is sufficient for tx and rx by the driver. When debug tools need to access resources in unmapped regions, driver needs to map these on the fly in order to complete read/write request. Signed-off-by:
Narender Kumar <narender.kumar@qlogic.com> Signed-off-by:
Dhananjay Phadke <dhananjay.phadke@qlogic.com> Signed-off-by:
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Bruce Allan authored
Some function pointers for a few PHY operations (for 82578 and 82567) and were set incorrectly causing functions to be executed that were accessing incorrect PHY register offsets for that particular device. This patch also moves a few PHY-specific functions from ich8lan.c to the more appropriate phy.c. Signed-off-by:
Bruce Allan <bruce.w.allan@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by:
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Bruce Allan authored
The workaround that detects the correct PHY ID when an initial read of the PHY ID registers returns an invalid one should retry up to ten times with a small delay between attempts using a single PHY address and then repeat using the remaining possible PHY addresses. Do this instead of trying each possible PHY address repeating that up to 100 times. Signed-off-by:
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Bruce Allan authored
The function pointers for 8257x devices are not set. This is not really a problem now because there is nothing in the driver that references the pointers for this particular MAC-family (the appropriate functions are called directly), but the pointers should be set in case they are used in the future. Signed-off-by:
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Alexander Duyck authored
The two functions skb_dma_map/unmap are unsafe to use as they cause problems when packets are cloned and sent to multiple devices while a HW IOMMU is enabled. Due to this it is best to remove the code so it is not used by any other network driver maintainters. Signed-off-by:
Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by:
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Alexander Duyck authored
Due to the fact that skb_dma_map/unmap do not work correctly when a HW IOMMU is enabled it has been recommended to go about removing the calls from the network device drivers. Signed-off-by:
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Alexander Duyck authored
Due to the fact that skb_dma_map/unmap do not work correctly when a HW IOMMU is enabled it has been recommended to go about removing the calls from the network device drivers. Signed-off-by:
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Alexander Duyck authored
Due to the fact that skb_dma_map/unmap do not work correctly when a HW IOMMU is enabled it has been recommended to go about removing the calls from the network device drivers. [ Fix bnx2_free_tx_skbs() ring indexing and use NETDEV_TX_OK return code in bnx2_start_xmit() after cleaning up DMA mapping errors. -Mchan ] Signed-off-by:
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Alexander Duyck authored
This patch removes the skb_dma_map/unmap calls from the igbvf driver due to the fact that it does not play well with HW IOMMU when combined with transmitting cloned skbs. Signed-off-by:
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